function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 7255],
    ['2022', 7791],
    ['2021', 10670],
    ['2020', 6151],
    ['2019', 6679],
    ['2018', 7430],
    ['2017', 6878],
    ['2016', 7648],
    ['2015', 6870],
    ['2014', 7297],
    ['2013', 6880],
    ['2012', 5262],
    ['2011', 4846],
    ['2010', 3645],
    ['2009', 3915],
    ['Other (247)', 29329]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=128546)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerYear', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerYear'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerYear);